[f2py] "natural" Fortran calling conventions?

Hi,

It seems like f2py only offers copying (in, out, inout), or in-place
reordering (inplace), but it doesn't offer the simplest case, namely just
leaving the array alone and reversing the order of the indexes that the
programmer sees.

Is there some way in which I can get f2py to use "natural" calling
conventions between Python and Fortran, something that always leaves the
array data alone?  By that I mean that I pass an array in such a way that
"a[i,j]" is accessed as "a(j+1,i+1)" in Fortran.

The current calling conventions seem to be going through a lot of trouble to
reorder the data in a way that then makes accesses particularly inefficient
from Fortran, just so that the order of the indexes stays the same.  Most
performance critical code will naturally use the reverse order of indexes in
Fortran and Python/C code anyway, since the decision of where to put the
indexes will be driven by which index varies fastest, not by which position
the index should be in.

Tom

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